Phone phreaking: Phone phreaking is a technique in which phone phreaks spend their time dialling around the telephone and trying to learn the pattern of tones to know how the calls were routed, how to imitate operators and other company personnel, trying to know the concealed telephone company technical journals, digging into the telephone company trash bins so as to know the confidential documents. This lead to the invention of electronic devices like blue boxes, red boxes and black boxes which helped the hackers to access the network and make free phone calls. Thus it started gaining popularity as a type of computer hacking.

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Dijkstra's Algorithm (part 1). Consider the network shown below, and Dijkstra’s link-state algorithm. Here, we are interested in computing the least cost path from node E (note: the start node here is E) to all other nodes using Dijkstra's algorithm. Using the algorithm statement used in the textbook and its visual representation, complete the "Step 0" row in the table below showing the link state algorithm’s execution by matching the table entries (i), (ii), (iii), and (iv) with their values. Write down your final [correct] answer, as you‘ll need it for the next question.

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Chapter 2, Problem 3E

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Phone phreaking:

Phone phreaking is a technique in which phone phreaks spend their time dialling around the telephone and trying to learn the pattern of tones to know how the calls were routed, how to imitate operators and other company personnel, trying to know the concealed telephone company technical journals, digging into the telephone company trash bins so as to know the confidential documents. This lead to the invention of electronic devices like blue boxes, red boxes and black boxes which helped the hackers to access the network and make free phone calls. Thus it started gaining popularity as a type of computer hacking.

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Dijkstra's Algorithm (part 1). Consider the network shown below, and Dijkstra’s link-state algorithm. Here, we are interested in computing the least cost path from node E (note: the start node here is E) to all other nodes using Dijkstra's algorithm. Using the algorithm statement used in the textbook and its visual representation, complete the "Step 0" row in the table below showing the link state algorithm’s execution by matching the table entries (i), (ii), (iii), and (iv) with their values. Write down your final [correct] answer, as you‘ll need it for the next question.

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